Well, a SIP client inside a netword with a firewall without portforwarding to this , and a asterisk server in another network, this have a internet public ip. The client can connect to the server?, this is possible? The port forwarding is neccesary?, only will rule a client with portforwarding? Is usable in this case stun or anything? The Sip proxy is not a Solution. Thanks. -- Alejandro Escanero Blanco Administrador Sistemas CEC.